JAMSC-120XCP80000
JAMSC-120XCP80000
JAMSC-120XCP80000
2．选择A/D转换器的转换速率
在不同的应用场合，对转换速率的要求是不同的，在相同的场合，精度要求不同，采样速率也会不同。采样速率主要由采样定理决定。确定了应用场合，就可以根据采集信号对象的特性，利用采样定理计算采样速率。如果采用数字滤波技术，还必须进行过采样，提高采样速率。
3．判断是否需要采样/保持器
采样/保持器主要用于稳定信号量，实现平顶抽样。对于高频信号的采集，采样/保持器是非常必要的。如果采集直流或者低频信号，可以不需要采样保持器。
4．选择合适的量程
模拟信号的动态范围较大，有时还有可能出现负电压。在选择时，待测信号的动态范围好在A/D器件的量程范围内。以减少额外的硬件付出。
◆ 企业名称：厦门泰尼电气有限公司
◆ 主营业务：DCS,PLC
◆ 经营模式： 贸易
◆ 贸易地区：
◆ 联系人： 小黄《女士》
◆ 电话：
◆手机：
◆ QQ:2917675397
◆ 传真： （备注“01006”收）
◆ E-mail： 2917675397@qq.com
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